You really are clueless..
Unsolicited statements are admissible without Miranda. Once you as a law enforcement officer asks a question, YOUR SOLICITING A STATEMENT.. and your stupid ass had better have Mirandized your suspect or its garbage.
Can you please cite your source?
I remember it differently. Maybe I am wrong. It's been a while.
If I sat in my patrol car and had a detainee in the back and he rambles on about the crime and i do not ask him any questions that is an unsolicited statement. That is admissible in court.
IF I take that same individual and I begin asking him questions and he answers, a lawyer can have that thrown out because he is in custody. An out of custody statement is a bit different.
IF you do not have custody and you ask to interview, formally as they did to Flynn, it is considered an IN CUSTODY INTERVIEW. You must give Miranda.
"The Miranda warning (often shortened to "Miranda", or "Mirandizing" a suspect) is the name of the formal warning that is required to be given by police in the United States to criminal suspects in police custody (or in a custodial situation) before they are interrogated, in accordance with the Miranda ruling."
Miranda v. Arizona - Wikipedia
en.wikipedia.org/wiki/Miranda_v._Arizona